home Hannah Davis decapitate de⋅cap⋅i⋅tate [di-kap-i-teyt] –verb (used with object) 1. to cut off the head of; behead: Many people were decapitated during the French Revolution. d a b c d e f g h i j k l m n o p q r s t u v w x y z dangle death darkness deprivation deer desert desk destruction dif-doi decapitate dairy dead defeat